Sony DM-106B Datasheet
Magnetoresistance Element
For the availability of this product, please contact the sales office.
Description
The DM-106B is a highly sensitive magnetoresistance element composed of an evaporated
ferromagnetic alloy on a silicon substrate. (The
element can be used for automatic shut off of tape
recorders, as a contactless switch, and as a general
detector of rotational motion.)
Features
• Low power consumption 11 mW (Typ.)
VCC=5 V
• Low magnetic field and high sensitivity
80 mVp-p (Typ.)
VCC=5 V
H=8000 A/m
• High reliability
Ensured through silicon
Nitride protective filming
DM-106B
M-110 (Plastic)
Structure
Thin-film nickel-cobalt magnetic alloy on silicon
substrate
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage VCC 10 V
• Operating temperature Topr –40 to +100 °C
• Storage temperature Tstg –50 to +125 °C
Recommended Operating Supply voltage 5V
Electrical Characteristics (Ta=25 °C)
Item Symbol Condition Min. Typ. Max. Unit
Total resistance
Midpoint potential
Output voltage
RT
VC
VO
VCC=5 V , H=8000 A/m
Revoiving magnetic field
VCC=5 V , H=8000 A/m
Revoiving magnetic field
VCC=5 V , H=8000 A/m
Revoiving magnetic field
1.4
2.45
60
2.3
2.50
80
3.7
2.55
kΩ
V
mVp-p
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E60142D5X-TE
Equivalent Circuit
RA RB
1
23
Introduction
1. Power supplying pin output pin
106
B
H
θ
max
RA RB
1
2
min
3
DM-106B
RA : Resistance reduces as the
magnetic field revolves.
RB : Resistance increases as the
magnetic field revolves.
123
RA
RB
1
2
3
2. Sensitive direction vs. Midpoint potential
Midpoint potential
VCC
2
S
H
H
VCC
c
d
b
a
a
b
e
d
Direction of Magnetic-flux
Incidence
e
Sensitive
Non-sensitive
Direction of Magnetic-flux
Incidence
Useful Region
c
Changes occur to the output voltage at the saturation region
of V-H curve according to the direction of magnetic flux.
These changes provide for the operation.
• With one rotation of magnetic flux, signals for 2 periods are
obtained.
—2—
Loading...